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GSO 1.25 Filters (4) for Planetary and Lunar Observation (Free Shipping) Sold!

Price - $19.99

Ad Number: 222465

Posted: 11 Sep 2020

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A nice set of 4 GSO filters to better observe the planets and moon

They are:
# 8 Light Yellow Filter enhances detail of red and orange-colored phenomena in the belts of Jupiter. It increases contrast of the blue-colored Maria on Mars. It provides improved resolution of detail on Uranus and Neptune in large telescopes (over 10"). The light yellow filter is popularly used to enhance lunar features, particularly in small telescopes (below 8"). In comets, it brings out highlights in yellowish dust tails and enhances the coma.

#11 Yellow-green filter enhances the view of cloud bands and delicate cloud bands and festoons of Jupiter and Saturn, darkens the maria of Mars, and improves the view of Uranus and Neptune

#23A Light Red Filter is another great filter for use on Mars, Jupiter, and Saturn, but because of lowered light transmission.

#38A Dark Blue Filter is a popular choice for the study of Jupiter's disc because it strongly rejects red and orange wavelengths in the belts, thus enhancing the boundaries between the reddish belts and the adjacent bright zones. It is useful for viewing the Great Red Spot. The filter works well on Martian surface phenomena like dust storms, and is very useful during the violet clearing and for polar caps.

Payment via PayPal. Free shipping to the lower 48 CONUS.


  • Condition Very Good
  • Location Tennessee

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